Rontgen tube



Jan. 27, 1931. E, .soHL 1,790,073

RGNTGEN TUBE Filed Oct; 25, 1927 eZn/enfar: PIC-3.6. 151R) 2 Fi 2, i a ctional levation on an enthe carrier tending to change the length of i 40 tube. The said tubular carrier 1) is provided b is bent laterally and the anticathode a Patented Jan. 27, 1931 i i UNITED. STATE. PATENT Application fi1ed October 25, 1927, Serial Ila/228,663, and in Germany July '2, 192?.

My invention relates to improvements in lar'lnovement'cau be imparted byhand or Rontgen tubes, and more particularly. in m chanical me'ansand the said movement is Rontgen tubes of the type in which provision transmitted by reason of the flexibility of is made for displacing the position of the the portion-b tothe anticathode, so that the 5 point of emission of rays in case of high load position of the point of emission of rays is of the tube such as occurs particularly when variable. I r usingthe same for therapeutic purposes, in In Fig. 2 I have shown a modification in order to prevent injury to the anticathode by which the anticathode is displaced by longi-. excessive heating at the point of emission of tudinal movement of the rod 0, the portion rays. The object of the improvements is to 71 of the carrier being flexible at one side only 6;- provide a tube of this class in which such and rigid at the opposite side. ,As shown displacing of the position of the point of. a rigid rod isfixed to one side of the poremission of rays can be effected in simple tion 6 7 I way, and with this object in view my inven- In the modificationshown in Fig. 3 the por- 1 tion consists in mounting the anticathode on a tion 5 isfiexible all around its circumference, 65 yielding carrier. and'the rod "0 'lSlOCfiiQCl. eccentrically within For the purpose of explainingthe inventhe carrier. Thus, when moving the rode in tion an example embodying the same has been axial directiontheflexible part b is bent in shown in the accompanying drawingin which lateral direction. r the same reference characters have been used In the construction'shown in Fig. '2 rock- 70 in all the views to indicate corresponding gmo ement may also be imparted to the parts In Said d i flexible portion 6 by varying the pressure of Fig. 1, is an elevation partly in section. the cooling liquid supplied to the antishowing the Rontgen tube, cathode, the variation of pressure within 5 larged scale showing the tubular carrier of e flex ble part thereof at One Side only. the anticathode, the said figure illustrating a I In the modification shown in Figs. 4 and n'iodification, 5 the carrier of the anticathode a comprises Figs. 3 and at, are similar sectional elevaa smooth pipe 6 having thin Walls and a v tions showing other modifications, flat cross-section, the said pipe being fined 0 Fig. 5, is a cross-scction taken on the line respectively to the anticathode and to a cap :)5 of Fig. 4, and 5 fused to the tubular portion 9. Further, Fig. 6, is a similar cross-section showing a the said carrier comprises the rod f which is modification. likewise fixed to the anticathode a and the Fig. 7 is an end view of the disk shown in cap 6 'lhrough the pipe b cooling waterv Figs. 1 and 2. I is supplied, so that the said pipe is constantly In the example shown in Fig. 1 the antimaintained at low temperature. However, cathode a is mounted on a tubular carrier Z) 8 od 7 is e p y heat y being 1 fused to a tubular portion 9 of the Rontgen nectcd to the anticathode, so that the pipe with a flexible-portion N, the wall of the said is displaced accordingly. Also in this 0011- carrier being formed with wavelike circumstruction the tube may be provided with a ferential corrugations. Within the smooth corrugated wall. 5 r nor-tion of the carrier 6 there is a disk d hav- For'improving the circulation of the cooli ug perforations (Z permitting the passage of ing water, 1 may provide two narrow pipes cooling water therethrough, and in a central 6* in lieu of a single pipe 6 as has been bore d of the said disk a rod 0 is guided shown in Fig. 6. The pipes b be cirwhich is passedinwardly to the bottom of the cular in cross-section, as shown, or they may anticathode to which .it is connected by an be made with flat cross-sections. If corru eye 6. To the said rod oscillating or circugated pipes are used in the examples illus- I m p i l. A Rontgen tube, comprising a bulb,

trated in Figs. 4 to 6, the displacement of the anticathode can be brought about by varying the pressure of the cooling water, in which case the expansion of the rod f by heat is irrelevant. i

I claim:

a cathode, an anticathode, a flexible tubular carrier for the anticathode, and an actuating rod passed through said carrier and joined to the anticathode for nnpartmg'to the ant1- cathode a transverse movement relative to the cathode during emission of X-rays.

2. A Rontgen tube, comprising a bulb, a cathode, an anticathode, a yielding carrier for one of these electrodes, and means for bending the said yielding carrier during emission of X-rays to produce a transverse movement of the ant-icathode relative to the cathode.

3. A Rontgen tube, comprising a bulb, a

cathode, an'anticathode, a flexible tubular carrier for the antlcathode. and means tor bending said'tubular carrier during emis sion of X-rays to produce a transverse movement of the anticathode relative tothe cathode. r

4. A Rontgen tube, comprising a bulb, a cathode, an anticathode, a circumterentially corrugated tubular carrier for the anticathode, andmea-ns for bending said tubular carrier during emission of X-raysto produce a transverse movement of the anticathode relative to the cathode. I

In testimony whereof I- afiix mv signature.

ERNST- POI-IL. 

